Intel's Haswell-E and X99 platform have been in development for a while now, and after several months of cloudy release schedules, it looks like Intel is sticking to the original 3Q14 timeline. X99 will be the world's first consumer-ready platform to support DDR4 memory and eliminate traditional channeled architecture, making it appealing for enthusiasts and development rigs. Haswell-E will be the first line of CPUs on the platform, continuing the last-gen -E suffix for extreme-series CPUs.
A recently-leaked document via Chinese site VR-Zone says that system builders can expect HW-E to be available on September 14, 2014, alongside the X99 platform. The X99 platform will not support DDR3 memory.
CPUs listed for release include: